Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Palaround - Meet people you should be friends with.
Splash - Anyone can create a Splash event, whether you're a company hosting a single event or an individual hosting a personal event like a birthday or wedding. Get Started for Free. Text goes here. X. Full Event Program.
Digg - Digg delivers the most interesting and talked-about stories on the Web right now.
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
quippd - quippd is a social news site that anyone can edit.